The center and radius of two circles are given.
Determine whether they touch.
Problem with the third test suite
in 3rd case,
they intersect at two points.
In geometry, tangent circles (also known as kissing circles) are circles that intersect in a single point.
How to subtract?
Converting numbers back from extended form
Most Frequent Word - 01
Repeat elements of a vector
3rd side of a Triangle
Game of life - 01
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